In WLAN bandwidth design, the average bandwidth of access users decreases linearly with the increase of users.

Question

Options

• ATrue
• BFalse

• A
  27% (9)
• B
  73% (24)

Explanation

Option B is correct because in WLAN environments, average bandwidth per user does not decrease in a simple linear fashion. As more users are added, contention for the shared wireless medium increases exponentially - devices must wait longer due to CSMA/CA backoff, collision overhead rises, and channel utilization efficiency drops sharply beyond a certain load threshold, making the degradation curve non-linear.

Why A is wrong: Claiming the decrease is linear implies each additional user reduces throughput by a fixed, constant amount. In reality, the first few users added have little impact, but as the channel becomes congested, each new user causes disproportionately greater degradation - the relationship is closer to exponential than linear.

Memory tip: Think of highway traffic - adding one more car at low density barely slows anyone down, but adding one more car in a near-full traffic jam causes a dramatic ripple effect. WLAN contention behaves the same way: the impact of each new user grows as load increases, not stays constant.

No community discussion yet for this question.